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A phonebook is a digital or physical directory that stores contact information such as names, phone numbers, email addresses, and sometimes photos or additional details. In mobile devices, the phonebook—often called the contacts list—is a built-in feature that allows users to easily manage and access communication details for individuals and organizations. It can be synchronized with cloud services, email accounts, and social media platforms for backup and integration. Modern phonebooks also support features like speed dial, caller ID, and grouping, making it easier to organize and connect with contacts efficiently.
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